comment on this article

Like U follows Q

Despite a growing migration towards the digital domain, the number of op amps available continues to increase. By Philip Ling

Quite frankly, the choice of operational amplifiers already available to the designer is bewildering, and yet still they come. Often, today choosing the one to suite your application has been simplified greatly, as it comes down to whether power is your main concern. If low power operation isn't a primary concern, it makes it a lot easier for the manufacturers to optimise the process, as without the constraint of maintaining low power operation, all other parameters are 'free' to be tweaked.

The operational amplifier has been on this steady evolutionary trail since its inception, in the absence of the 'step changes' associated with the digital world. Some may say that manufacturers are too keen to make these 'slight changes', rather than concentrating on improving, for example, precision, at the cost of leaving everything else the same.

The problem here is, of course, that wouldn't be possible because of the close interdependencies between all the parameters – optimising for one often comes at the cost of degrading another. So, manufacturers must take a 'slowly, but surely' approach towards the 'utopia' of infinite bandwidth, lower power, lower operating voltage and higher precision.

Click here to request this article by email

Graham Pitcher

Comment on this article

This material is protected by MA Business copyright See Terms and Conditions. One-off usage is permitted but bulk copying is not. For multiple copies contact the sales team.

What you think about this article:

Add your comments


Your comments/feedback may be edited prior to publishing. Not all entries will be published.
Please view our Terms and Conditions before leaving a comment.

Related Articles